JPH08100979A - Show case - Google Patents

Abstract

PURPOSE: To provide a show case in which a substantially the same arrangement as that of a prior art compressor having no desperheated pipe connected thereto is installed even if a compressor having a desperheated pipe connected thereto is installed. CONSTITUTION: A display chamber 1 for use in displaying goods is installed as an upper part of a show case and a machine chamber 2 is installed at a lower part of the show case. Then, a transparent plate 4 for shielding the display chamber against surrounding air is installed at a front surface of the display chamber and in turn a condensor 24 and a compressor 26 acting as composing elements for a freezing cycle for cooling an inner side of the display chamber are installed within the machine chamber. In addition, a duct 31 for blowing air to the transparent plate is installed in front of the machine chamber and further a desperheated pipe 34 connected to the compressor is arranged within the duct.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a showcase in which a transparent plate such as a windshield is provided in front of a display room for displaying products, and a machine room is arranged below the display room. In particular, the present invention relates to a showcase provided with a blower that prevents dew condensation on the transparent plate.

[0002]

2. Description of the Related Art Conventionally, this type of showcase has been used as a face-to-face showcase for Western sweets and the like, and since the inside of its display room is cooled, the windshield provided in front of it has a low temperature, Condensation occurs on this windshield. In order to prevent this dew condensation, warm air is flown on the front surface of the windshield. As a heat source for this warm air, conventionally, an electric heater is provided, or exhaust heat after cooling the condenser is used.

Further, in a rotary compressor or the like, when CFC 22 is used as the refrigerant in place of CFC 12 in order to prevent the destruction of the ozone layer, a dissuper pipe is installed in the compressor in order to lower the temperature of the compressor. May be connected. This dissuper pipe needs to be cooled, and is usually integrated with a condenser and air-cooled together by a condenser fan.

[0004]

By the way, in a showcase which has been so far designed to be equipped with a compressor to which a dissuper pipe is not connected, for example, in order to prevent the destruction of the ozone layer, Freon 22 is used as a refrigerant. There is a case where the design is changed so that the compressor equipped with the dissuper pipe is installed. On the other hand, if you make a major design change,
Since it is necessary to change the arrangement and the manufacturing procedure, there is a demand to make the change as small as possible. However, as described above, since the conventional dissuper pipe is installed integrally with the condenser, the volume of the condenser unit is larger than that of the conventional unit by the dissuper pipe. Then, due to the influence, it is necessary to change the position of the condenser fan arranged in the vicinity of the condenser, and accordingly, it is necessary to change the position of the compressor and the like.

The present invention has been made to solve the above problems. In the case where a compressor to which a dissuper pipe is connected is mounted, but a compressor to which a conventional dissuper pipe is not mounted is mounted. The purpose of the present invention is to provide a showcase that has substantially the same arrangement. Another object is to provide a showcase that can effectively use the exhaust heat of the dissuper pipe.

[0006]

In order to achieve the above object, the showcase of the present invention is provided with a display room (1) for displaying products and a machine room (2) at the bottom. In the showcase described above, a transparent plate (4) for shielding the display room from outside air is provided on the front surface of the display room, while a refrigeration cycle for cooling the inside of the display room is provided inside the machine room. Of the condenser (2
4) and the compressor (26) are placed,
A duct (31) for blowing air to the transparent plate is arranged in front of the machine room, and a dissuper pipe (34) connected to the compressor is provided in the duct.
Is provided.

Further, a fan (25) for air-cooling the condenser is arranged inside the machine room together with the condenser and the compressor. Further, the front wall of the machine room is provided inside the duct by the fan. An opening (28) leading to the duct may be formed to allow ventilation.

[0008]

[Operation] When the compressor is driven, the temperature of the dissuper pipe connected to this compressor rises. Then, this dissuper pipe heats the air in the duct to make it warm. This warm air is blown to the transparent plate arranged in the front of the display room to warm the transparent plate. Therefore, even if the display room is cooled, it is possible to prevent the temperature of the transparent plate provided on the front surface of the display room from decreasing and prevent the occurrence of dew condensation.

When an opening is formed in the front wall of the machine room so that the condenser fan can blow air into the duct, the condenser fan air-cools the condenser and the air after the air-cooling is performed. The air flows into the transparent plate from the duct by flowing into the duct through the opening formed on the front wall of the machine room.

[0010]

EXAMPLES Next, an example of a showcase according to the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of an embodiment of the showcase of the present invention. FIG. 2 is a perspective view in which a part of the front panel is cut away in the showcase of FIG. FIG. 3 is a sectional view of FIG. FIG. 4 is an enlarged view of a main part of FIG. FIG. 5 is a refrigerant circuit diagram.

In FIG. 1, a face-to-face showcase for displaying various products such as cakes and other Western confectionery is displayed at the upper part of the display room 1
However, the machine room 2 is arranged in the lower part. The display room 1 has a front glass 4 which is a transparent plate on the front side thereof, transparent side glasses 5 which are side plates on both left and right sides, and a top plate 6 which is further on the upper side. An opening for storing and taking out is formed. Glass doors 8 and 9 which are pulled up are slidably attached to this opening. The display room 1 thus configured is shielded from the outside air by the windshield 4, side glass 5, top plate 6 and doors 8 and 9. Further, several display shelves 11 are arranged inside the display room 1.

In FIGS. 3 and 4, a bottom wall 12 which is a partition wall made of foamed synthetic resin such as hard foamed polyurethane is disposed between the display room 1 and the machine room 2. An evaporator 14 and an evaporator fan 15 are mounted on the bottom wall 12, and the evaporator 1
4 and the evaporator fan 15 above the floor plate 17
Is provided. A suction port 21 is formed at the front end of the floor plate 17, and a cold air discharge port 22 is formed at the rear end thereof.

Then, in the machine room 2, a condenser 2 which constitutes a refrigeration cycle together with the evaporator 14 described above.
4, condenser fan 25 and compressor 2
6 is provided. Further, a plurality of openings 28 are formed in the front wall 27 of the machine room 2, and the inside of the machine room 2 is provided with a duct 31 arranged in front of the machine room 2 through the openings 28.
Is in communication with. The duct 31 is formed by utilizing a space defined by the front surface of the bottom wall 12 and the front wall 27 of the machine room 2 and the front panel 32. Inside the duct 31, a copper pipe is formed. Dissuper pipe 3
4 are provided. An opening 36 communicating with the outside of the showcase is formed in the lower portion of the front wall 27 of the machine room 2.

In FIG. 5, a dissuper pipe 34 is connected to the compressor 26, and the refrigerant compressed by the compressor 26 once flows into the dissuper pipe 34, is air-cooled, and then returns to the compressor 26. After cooling the mechanical part, it is discharged to the condenser 24. In this way, the temperature rise of the compressor 26 main body is prevented. Then, the refrigerant flowing into the condenser 24 is air-cooled by the condenser fan 25 in the condenser 24. Then, the cooled refrigerant is dehumidified in the dry core 41, then flows into the evaporator 14 via the capillary tube 42 and adiabatically expands, and the temperature of the refrigerant further decreases. Then, in the evaporator 14, the low-temperature refrigerant cools the air blown by the evaporator fan 15. After that, the refrigerant flows to the accumulator 44 via the check valve 43, the gas-liquid is separated in the accumulator 44, and the gaseous refrigerant returns to the compressor 26. In this way, the refrigeration cycle is configured by the components such as the compressor 26, the condenser 24, and the evaporator 14. The accumulator 44 is wound with the capillary tube 42 to form a heat exchange section.

In the showcase thus constructed, when the evaporator fan 15 rotates, the floor plate 17 is rotated.
The air below is forced to circulate by being blown in the direction of the arrow shown by the solid line. That is, the evaporator fan 15
The air blown from the air moves to the evaporator 14, is cooled, and is discharged from the cold air discharge port 22 into the display chamber 1. Then, the cool air blown out from the cool air outlet 22 is displayed in the display room 1
Ascending along the glass doors 8 and 9 arranged at the rear of the display room, changing direction with the top plate 6, descending along the windshield 4 arranged in front of the display room 1, Cooling.
The air that has cooled the inside of the display room 1 is sucked through the suction port 21 formed on the front side of the floor plate 17 and returns to the evaporator fan 15.

When the condenser fan 25 is rotated, air is sucked from the rear of the machine room 2 to cool the condenser 24, and the condenser fan 25 is blown in the direction of the arrow shown by the broken line, that is, forward. This blown air is heated by the condenser 24 when the condenser 24 is cooled, and is higher than the outside air temperature. This air then cools the compressor 26. Then, the air flow blown by the condenser fan 25 is divided into two directions of the opening 36 and the opening 28 in the front wall 27 of the machine room 2, one of which is discharged to the outside of the showcase through the opening 36 and the other of which is discharged. It is supplied to the duct 31 through the opening 28. The air flow supplied to the duct 31 is heated by the exhaust heat of the dissuper pipe 34 arranged inside the duct 31, the temperature further rises and becomes warm air, and is discharged from the upper end portion of the duct 31. The discharged warm air rises along the outer surface of the windshield 4 as it rises.
To prevent condensation on the windshield 4.

In addition, from the upstream side of the air flow generated by the condenser fan 25 toward the downstream side,
A condenser 24, a compressor 26 and a dissuper pipe 34 are arranged. Further, the front wall 27 of the machine room 2 is divided in two directions only on the side of the opening 28, because the opening area on the discharge side of the duct 31 communicating with the opening 28 is small, so that the air volume becomes small and the condenser 24 This is because the amount of air for cooling is insufficient. Therefore, air is discharged directly from the opening 36 to the outside of the machine room 2 to increase the amount of air that cools the condenser 24.

As described above, in this embodiment, the dissuper pipe 34 is provided in the duct 31 provided in front of the machine room 2 and is not integrated with the condenser 24. Therefore, the size of the condenser 24 is hardly changed between the case where the dissuper pipe 34 is provided and the case where the dissuper pipe 34 is not provided.
4, condenser fan 25 and compressor 2
There is no need to change the position such as 6. As a result, the influence of the design change due to the presence or absence of the dissuper pipe 34 is small.

Since the dissuper pipe 34 is provided outside the machine room 2 as described above, the space of the machine room 2 is not narrowed.

Further, in the condenser fan 25, the compressor 26 is also air-cooled, but in this embodiment, since the dissuper pipe 34 is located downstream of the compressor 26 in the air flow, the dissuper pipe 3
The heat effect of No. 4 does not reach the compressor 26. On the contrary, when the dissuper pipe 34 is provided integrally with the condenser 24 as in the conventional case, the dissuper pipe 34 is located on the upstream side of the air flow with respect to the compressor 26.
The heat effect of the dissuper pipe 34 is due to the compressor 26
In addition, the efficiency of cooling the compressor 26 by air becomes poor.

Further, since the air in the duct 31 is heated by the dissuper pipe 34 and sufficiently warmed up, the dew condensation on the windshield 4 can be efficiently prevented.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims. It is possible to make changes. A modified embodiment of the present invention is illustrated below. (1) The refrigerant is not limited to the Freon 22, and an appropriate refrigerant can be adopted.

(2) In the embodiment, air is blown through the duct 31 by the condenser fan 25, but it is possible to use other air blowers. It is also possible to install another heater together with the dissuper pipe 34.

[0024]

According to the present invention, since the dissuper pipe is provided outside the machine room and is not integrated with the condenser, the condenser unit can have a substantially constant size regardless of the presence or absence of the dissuper pipe. it can. As a result, neither the showcase with the dissuper pipe nor the showcase without the dissuper pipe has a large change in the layout inside the machine room, and the influence of the design change due to the presence or absence of the dissuper pipe can be reduced.

Further, since the dissuper pipe is outside the machine room and the compressor is present inside the machine room, the dissuper pipe does not affect the compressor thermally. As a result, it is possible to prevent the temperature of the compressor from rising and prevent the compressor from failing. Further, since the exhaust heat of the dissuper pipe can be used to heat the air blown to the transparent plate, the thermal efficiency is improved as compared with the case of using an electric heater or the like.

When an opening is formed in the front wall of the machine room so that the air can be blown into the duct by the condenser fan, the condenser fan is used.
Since it is possible to blow air from the duct to the transparent plate, it is not necessary to separately install a blowing device for the duct. Moreover, not only the dissuper pipe but also the exhaust heat of the condenser can be used to heat the air blown to the transparent plate. Further, since the dissuper pipe is located on the downstream side of the air flow with respect to the compressor, the dissuper pipe does not have a thermal effect on the compressor.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a showcase of the present invention.

FIG. 2 is a perspective view in which a part of a front panel is cut away in the showcase of FIG.

FIG. 3 is a sectional view of FIG. 1;

FIG. 4 is an enlarged view of a main part of FIG. 3;

FIG. 5 is a refrigerant circuit diagram.

[Explanation of symbols]

 1 Display Room 2 Machine Room 4 Windshield (Transparent Plate) 24 Condenser 25 Condenser Fan 26 Compressor 28 Opening 31 Duct 34 Dissuperpipe

Claims (2)

[Claims] 1. A showcase in which a display room for displaying goods is arranged in an upper part and a machine room is arranged in a lower part, and a transparent plate for shielding the display room from outside air is provided on a front surface of the display room. On the other hand, inside the machine room, a condenser and a compressor, which are components of a refrigeration cycle for cooling the inside of the display room, are arranged, and in front of the machine room, the transparent A showcase characterized in that a duct for blowing air to the plate is provided, and a dissuper pipe connected to the compressor is provided in the duct. 2. A fan for air-cooling the condenser is arranged inside the machine chamber together with the condenser and the compressor, and the fan is blown into the duct on the front wall of the machine chamber. The showcase according to claim 1, wherein an opening communicating with the duct is formed so that the duct can be opened.